Sir C. V. Raman was born on November 7, 1888 at Tiruchirappalli. His full name was Chandrasekhar Venkat Raman. He was educated in Chennai. In his research in physics he discovered the Raman effect. This research led to the discovery of Raman scattering.

 What is the Raman effect?

 When a ray of light passes through a dust-free, transparent chemical compound, some of its light is formed in the opposite direction to the incoming rays. These diffused rays of light are of the same wave. However, some of the rays of light are different from the rays of light emitted. This is called Raman effect.

Raman was conferred the title of Sir by the King of Britain. He was also awarded the Nobel Prize in Physics in 1930. He was the second Indian to win the Nobel Prize after Rabindranath Tagore. Sir C. V. Raman was a Professor of Physics at Calcutta University from 1917-1933. There he became the head of the physics department. Also in 1947, he was the director of the Raman Research Institute in Bangalore. After India's independence, Raman was helpful in setting up many research institutes and universities. For this achievement, he was awarded the Bharat Ratna, the highest civilian award, by the Government of India in 1954.

Dr. C. V. Raman published his research on February 28, 1928. He later received the Nobel Prize for that. Therefore, this day is observed as 'National Science Day'. National Science Day was celebrated for the first time on February 28, 1987.

Raman studied the radiation of light from water and ice and showed that the cause of the blue sea was the radiation of light from the water molecules. This research led to the discovery of the structure of the molecular process of light radiation. The Raman effect was instrumental in determining the composition of the chemical compound. It was possible to determine the composition of more than two thousand chemical compounds. This led to the discovery of laser beams. More than ten thousand researches over the next two years relied on the Raman result. Even in our daily life, many things like the color of signal lights are determined by the radiation of this light.

Sir C. V. Raman died on 21 November 1970 in Bangalore.



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